RSR oil pump -- 997-107-007-91 ?

[JoeMag]

Is the GT3RS 4.0 oil pump also known as the RSR oil pump?

Hearing it's needed for 80.4 / 82.4 stroker motors?

[Evan Fullerton]

I don’t know about part numbers but the factory 4.0L motors do use a different part number oil pump that has more rod clearance. Not sure if the standard oil pump can just be modified with a die grinder to fit or if you really need the different oil pump. As I recall the 4.0L pump is really expensive.

Steel rods vs. the titanium rods in a factory motor might be enough smaller that it isn’t as big of a clearance issue depending on what you are building.

[Bill Verburg]

Originally Posted by JoeMag

Is the GT3RS 4.0 oil pump also known as the RSR oil pump?

Hearing it's needed for 80.4 / 82.4 stroker motors?

No

The 997GT3 RSR pump is 997.107.007.8B
the 4.0 street GT# 4.0 is997.107..007.90
the 3.6 street pimp is 996.107.007.94

there was also a 997.107.007.8A used on the 997 GT3 Cups